From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5E323C433F5 for ; Thu, 21 Oct 2021 21:17:19 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 04F716109F for ; Thu, 21 Oct 2021 21:17:18 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 04F716109F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:39526 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mdfR8-0006Ta-3l for qemu-devel@archiver.kernel.org; Thu, 21 Oct 2021 17:17:18 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:48308) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mdfG5-0007O3-BY for qemu-devel@nongnu.org; Thu, 21 Oct 2021 17:05:57 -0400 Received: from mail-pg1-x533.google.com ([2607:f8b0:4864:20::533]:43576) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1mdfG3-0004FU-4A for qemu-devel@nongnu.org; Thu, 21 Oct 2021 17:05:53 -0400 Received: by mail-pg1-x533.google.com with SMTP id r2so1386273pgl.10 for ; Thu, 21 Oct 2021 14:05:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=ek5wQYkVQoH2sT/1n0bEqo8hkSGClCj2XVIXi5hg7S8=; b=aVeNJzZQJtwbQ3Cg8pM/oSWsNayyChEtBDLONjxPlMGH6r/JsUr3a/y+2x1thl3kL9 1sp2JOIUiLC3NBWr1G1/KStPRrqsWA8y6pfvbZd7oWD5n4Y+GewhFX9xlBu0UUac13sq Gnjb01qGkIywwczv53R1sLKS+vN69pQdVfGbp8YOQNlg/ToSLEBj/PBAClxkZg7UY7dU RdgdC+ow1OSVcsWR6J5MtcrkkIFjuWjSiLAptUl1Hr2rMoE735+GSL4CFdhbCCneBZF4 nCc3/X1V4/0n2HvNcijaEtp/7hwUeu41fiTxpu45zagM77CkuJu9HLgBr5on2Eg/goWY 1FHA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=ek5wQYkVQoH2sT/1n0bEqo8hkSGClCj2XVIXi5hg7S8=; b=b2Gyg00HU2F/czRVFY29Ro8Kuhwhn0ZJqGjIqlnw07dXR6croqtdeo7zLLSq2LtLuH ya+fgidMVhO3cRs4Us+k0XMiIOv8UzusEFRJWdSCwZBfelDduJq0K502tLcd68KecfVa 42sXhng0GGfzeB+qx8Dn3ZWfr5SpIxkQMH1WSQAHHPnJT58Obp/Thq7HF6X+hggm13hL 2pU/wQZ952y+m9v3AGm2QQz2S9NiywIdyKujSKSDiFoqL2yBJlCMiYgWXl2E1rHDXoCL 7Hl7EuAmbfMBRISIPsFFw10P/goGgjnoLJtPKq+q6HiYA4M/rqRYupliB216x8YTsQ4A V2IA== X-Gm-Message-State: AOAM5317uQPXSL0Z+QIxNp6adxLXvhMwy/d/H2xNSi9S22RjU5QEYBD0 PSpyzjawvRmDq/C58jbsBHtd/2+Txxg= X-Google-Smtp-Source: ABdhPJxYpgRV5OcAKH5rQQJoC04/8Z5gYCHHWb7N/bcWvb4/VocCf+i2rlr0NsXuwfIpiVqA3/0DXA== X-Received: by 2002:a63:9dc4:: with SMTP id i187mr6319371pgd.260.1634850349588; Thu, 21 Oct 2021 14:05:49 -0700 (PDT) Received: from localhost.localdomain ([71.212.134.125]) by smtp.gmail.com with ESMTPSA id g7sm5981670pgp.17.2021.10.21.14.05.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 21 Oct 2021 14:05:49 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v3 12/48] tcg/optimize: Split out finish_folding Date: Thu, 21 Oct 2021 14:05:03 -0700 Message-Id: <20211021210539.825582-13-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211021210539.825582-1-richard.henderson@linaro.org> References: <20211021210539.825582-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2607:f8b0:4864:20::533; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x533.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: luis.pires@eldorado.org.br, alex.bennee@linaro.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Copy z_mask into OptContext, for writeback to the first output within the new function. Reviewed-by: Luis Pires Signed-off-by: Richard Henderson --- tcg/optimize.c | 49 +++++++++++++++++++++++++++++++++---------------- 1 file changed, 33 insertions(+), 16 deletions(-) diff --git a/tcg/optimize.c b/tcg/optimize.c index 066e635f73..368457f4a2 100644 --- a/tcg/optimize.c +++ b/tcg/optimize.c @@ -48,6 +48,9 @@ typedef struct OptContext { TCGContext *tcg; TCGOp *prev_mb; TCGTempSet temps_used; + + /* In flight values from optimization. */ + uint64_t z_mask; } OptContext; static inline TempOptInfo *ts_info(TCGTemp *ts) @@ -629,6 +632,34 @@ static void copy_propagate(OptContext *ctx, TCGOp *op, } } +static void finish_folding(OptContext *ctx, TCGOp *op) +{ + const TCGOpDef *def = &tcg_op_defs[op->opc]; + int i, nb_oargs; + + /* + * For an opcode that ends a BB, reset all temp data. + * We do no cross-BB optimization. + */ + if (def->flags & TCG_OPF_BB_END) { + memset(&ctx->temps_used, 0, sizeof(ctx->temps_used)); + ctx->prev_mb = NULL; + return; + } + + nb_oargs = def->nb_oargs; + for (i = 0; i < nb_oargs; i++) { + reset_temp(op->args[i]); + /* + * Save the corresponding known-zero bits mask for the + * first output argument (only one supported so far). + */ + if (i == 0) { + arg_info(op->args[i])->z_mask = ctx->z_mask; + } + } +} + static bool fold_call(OptContext *ctx, TCGOp *op) { TCGContext *s = ctx->tcg; @@ -1122,6 +1153,7 @@ void tcg_optimize(TCGContext *s) partmask &= 0xffffffffu; affected &= 0xffffffffu; } + ctx.z_mask = z_mask; if (partmask == 0) { tcg_opt_gen_movi(&ctx, op, op->args[0], 0); @@ -1570,22 +1602,7 @@ void tcg_optimize(TCGContext *s) break; } - /* Some of the folding above can change opc. */ - opc = op->opc; - def = &tcg_op_defs[opc]; - if (def->flags & TCG_OPF_BB_END) { - memset(&ctx.temps_used, 0, sizeof(ctx.temps_used)); - } else { - int nb_oargs = def->nb_oargs; - for (i = 0; i < nb_oargs; i++) { - reset_temp(op->args[i]); - /* Save the corresponding known-zero bits mask for the - first output argument (only one supported so far). */ - if (i == 0) { - arg_info(op->args[i])->z_mask = z_mask; - } - } - } + finish_folding(&ctx, op); /* Eliminate duplicate and redundant fence instructions. */ if (ctx.prev_mb) { -- 2.25.1